.my-dropmenu-wrap {
    position: relative;
    width: 100%;
    /* height: 100%; */
    z-index: 1;
    line-height: 1;
}
.my-dropmenu-seleted-show {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    font-size: 14px;
    color: #222;
    text-align: center;
    border: 1px solid #d9d9d9;
    border-radius: 2px;
    padding: 10px 8px;
    cursor: pointer;
    background: #fff;
}
.my-dropmenu {
    position: absolute;
    top: 100%;
    width: 100%;
    display: none;
    border-radius: 1px;
    transition: all .5s ease-in-out;
    background: #fff;
}
.my-dropmenu-ul {
    width: 100%; 
    max-height: 150px;
    overflow-y: auto;
    box-shadow: 0 3px 6px -4px #0000001f, 0 6px 16px #00000014, 0 9px 28px 8px #0000000d;
}
.my-dropmenu-li {
    width: 100%;
    padding: 10px 8px;
    cursor: pointer;
}
.my-dropmenu-li:hover {
    background: #f5f5f5;
}
.my-dropmenu-li-text {
    width: 100%;
    font-size: 14px;
    color: rgba(0,0,0,.85);
    text-align: left;
}
.my-dropmenu-li:hover .my-dropmenu-li-text {
    color: rgba(0,0,0,1);
}
.my-dropmenu-seleted-show > i{
    transform: rotateZ(0deg);
    transition: all .2s ease-in-out;
}
.my-dropmenu-wrap-expand .my-dropmenu {
    display: block;
}
.my-dropmenu-wrap-expand .my-dropmenu-seleted-show > i{
    transform: rotateZ(180deg);
}